US11697446B2 - Adjustment drive for a steering column, drive unit for an adjustment drive, motor-adjustable steering column for a motor vehicle, and method for producing an adjustment drive for a steering column - Google Patents

Adjustment drive for a steering column, drive unit for an adjustment drive, motor-adjustable steering column for a motor vehicle, and method for producing an adjustment drive for a steering column Download PDF

Info

Publication number
US11697446B2
US11697446B2 US16/605,244 US201816605244A US11697446B2 US 11697446 B2 US11697446 B2 US 11697446B2 US 201816605244 A US201816605244 A US 201816605244A US 11697446 B2 US11697446 B2 US 11697446B2
Authority
US
United States
Prior art keywords
drive
transmission
part housing
wheel
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US16/605,244
Other languages
English (en)
Other versions
US20210139067A1 (en
Inventor
Arne Schacht
Sebastian Huber
Jean-Pierre Specht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp AG
ThyssenKrupp Presta AG
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Presta AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp AG, ThyssenKrupp Presta AG filed Critical ThyssenKrupp AG
Assigned to THYSSENKRUPP PRESTA AG, THYSSENKRUPP AG reassignment THYSSENKRUPP PRESTA AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHACHT, ARNE, HUBER, SEBASTIAN, SPECHT, JEAN-PIERRE
Publication of US20210139067A1 publication Critical patent/US20210139067A1/en
Application granted granted Critical
Publication of US11697446B2 publication Critical patent/US11697446B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/181—Steering columns yieldable or adjustable, e.g. tiltable with power actuated adjustment, e.g. with position memory
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/185—Steering columns yieldable or adjustable, e.g. tiltable adjustable by axial displacement, e.g. telescopically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/039—Gearboxes for accommodating worm gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/209—Arrangements for driving the actuator using worm gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02082—Gearboxes for particular applications for application in vehicles other than propelling, e.g. adjustment of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H57/022—Adjustment of gear shafts or bearings
    • F16H2057/0228—Mounting with rough tolerances and fine adjustment after assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/0325—Moulded casings made from plastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
    • F16H2057/125—Adjustment of backlash during mounting or assembly of gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/025—Support of gearboxes, e.g. torque arms, or attachment to other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/03—Gearboxes; Mounting gearing therein characterised by means for reinforcing gearboxes, e.g. ribs

Definitions

  • the present disclosure generally relates an adjustment drive for a motor-adjustable steering column for a motor vehicle.
  • Steering columns for motor vehicles have a steering shaft with a steering spindle, at the rear end of which in the direction of travel, which faces the driver, a steering wheel is attached for introducing a steering command by the driver.
  • the steering spindle is mounted so as to be rotatable about its longitudinal axis in an actuating unit which is held by a carrying unit on the vehicle body.
  • a longitudinal adjustment can occur by virtue of the fact that the actuating unit is received in a telescopically displaceable manner in the direction of the longitudinal axis in a casing unit, also referred to as a guide box or box-section swinging fork, connected to the carrying unit.
  • a height adjustment can be realized by virtue of the fact that the actuating unit or a casing unit receiving the latter is pivotably mounted on the carrying unit.
  • the adjustment of the actuating unit in the longitudinal or height direction allows an ergonomically comfortable steering wheel position to be set relative to the driver position in an operating position, also referred to as a driving or actuating position, in which a manual steering intervention can occur.
  • the threaded spindle and the spindle nut can be driven to rotate with respect to one another about an axis, namely the threaded spindle axis, with the result that, depending on the direction of rotation, the threaded spindle and the spindle nut can be moved translationally toward one another or away from one another in the direction of the threaded spindle axis.
  • the threaded spindle can be driven to rotate about its threaded spindle axis by the drive unit, which is fixedly connected to the actuating unit or the carrying unit, and engages in the spindle nut, which is fixedly attached in terms of rotation about the threaded spindle axis on the carrying unit or alternatively on the actuating unit.
  • the threaded spindle In the direction of the threaded spindle axis, the threaded spindle is supported on the carrying unit or the actuating unit, and the spindle nut is correspondingly supported on the actuating unit or alternatively on the carrying unit, with the result that a rotational drive of the threaded spindle brings about a translational adjustment of the carrying unit and actuating unit relative to one another in the direction of the threaded spindle axis.
  • This embodiment is therefore also referred to as a rotational spindle drive.
  • the threaded spindle is nonrotatably coupled to the carrying unit or alternatively to the actuating unit with respect to rotation about its threaded spindle axis
  • the spindle nut is correspondingly rotatably mounted on the actuating unit or alternatively on the carrying unit but is stationary in the direction of the threaded spindle axis.
  • the threaded spindle is supported on the carrying unit or on the actuating unit in the direction of the threaded spindle axis, and the spindle nut is correspondingly supported on the actuating unit or on the carrying unit, with the result that the threaded spindle can be displaced translationally in the direction of the threaded spindle axis by virtue of the spindle nut being driven to rotate by the drive unit about the threaded spindle axis.
  • This embodiment is also referred to as a plunger spindle drive.
  • the rotational drive of the threaded spindle brings about a translational adjustment of the carrying unit and actuating unit relative to one another in the direction of the threaded spindle axis.
  • the spindle drive forms a motor-operated adjustment drive which acts between the carrying unit and actuating unit and by means of which the actuating unit can be adjusted for adjustment relative to the carrying unit.
  • a spindle drive of an adjustment drive can be arranged between the actuating unit and a casing unit, also referred to as a guide box or box-section swinging fork, which receives the latter in an axially longitudinal displaceable manner and which is connected to the carrying unit, and wherein the threaded spindle axis can be oriented substantially parallel to the longitudinal axis.
  • a spindle drive can be arranged between the carrying unit and an actuating unit which is mounted thereon so as to be pivotable in height or a casing unit, in which the actuating unit is received.
  • a motor-operated longitudinal and height adjustment can be embodied individually or in combination on a steering column.
  • the drive of the spindle drive is effected by the drive unit via a transmission wheel which can be driven to rotate about its transmission axis, which is identical to the threaded spindle axis, which transmission wheel, depending on the embodiment of the spindle drive, is connected to the spindle nut or to the threaded spindle in a rotationally fixed manner.
  • the transmission wheel comprises, for example, a toothing portion in the form of a spur gear with an outer circumferential toothing or worm toothing.
  • the toothing portion is arranged in the axial direction between two end bearing surfaces which run around coaxially to the axis.
  • the bearing surfaces are arranged in a bearing arrangement between corresponding outer bearing surfaces which are formed fixedly on the actuating unit or the carrying unit, for example in a transmission housing.
  • Such an adjustment drive is known from DE 10 2014 104 362 A1, for example. It comprises a drive unit having a transmission in which there is mounted a drive wheel which can be driven to rotate about a drive axis by an electric actuating motor and which forms a first transmission member.
  • this drive wheel is designed as a worm and is in operative engagement with a transmission wheel which is designed in the example as a corresponding worm wheel and forms a second transmission member which is mounted in the transmission so as to be rotatable about a transmission axis.
  • the transmission wheel is connected, coaxially to the threaded spindle axis, either to the threaded spindle or the spindle nut depending on whether a rotational spindle drive or a plunger spindle drive is realized.
  • the drive wheel and the transmission wheel are rotatably mounted in bearings, as a rule in shaft bearings, which are mounted in a transmission housing.
  • bearings For a high running smoothness and a low degree of wear, it is required that the bearings are positioned with respect to one another as exactly as possible in the operative engagement of drive wheel and transmission wheel.
  • the distance In the case of toothed wheels, the distance must correspond as precisely as possible to the sum of the pitch circles of the toothings. Deviations which are caused, for example, by manufacturing tolerances cannot be compensated for by the positioning of the bearings, with the result that, for example, spring-loaded press-on devices are used by means of which a spring force is applied to the operative engagement of drive wheel and transmission wheel.
  • a disadvantage with such press-on devices is that the required movable parts can result in a high manufacturing and assembly outlay and unfavorable, undesired natural frequencies can occur.
  • FIG. 1 is a schematic perspective view of a steering column.
  • FIG. 2 is a further perspective view of the steering column as shown in FIG. 1 from another angle of view.
  • FIG. 3 is a perspective view of a drive unit of an adjustment drive of the steering column as shown in FIGS. 1 and 2 .
  • FIG. 4 is a perspective view of the drive unit as shown in FIG. 3 in an exploded state.
  • FIG. 5 is a cross-sectional view through a drive unit as shown in FIG. 2 in a first aspect.
  • FIG. 6 is a cross-sectional view through a drive unit as shown in FIG. 2 in a second aspect.
  • FIG. 7 is a cross-sectional view through a drive unit as shown in FIG. 2 in a third aspect.
  • FIG. 8 is a cross-sectional view through a drive unit as shown in FIG. 2 in a fourth aspect.
  • FIG. 9 is a side view of the drive unit as shown in FIG. 5 in a first variant.
  • FIG. 10 is a side view of the drive unit as shown in FIG. 5 in a second variant.
  • the invention relates to an adjustment drive for a motor-adjustable steering column for a motor vehicle, comprising a drive unit having a transmission in which there is mounted a drive wheel which can be driven to rotate about a drive axis and which is in operative engagement with a transmission wheel which is mounted in the transmission so as to be rotatable about a transmission axis.
  • the invention also relates to a drive unit for such an adjustment drive, to a motor-adjustable steering column for a motor vehicle having an adjustment drive and to a method for producing an adjustment drive.
  • an adjustment drive stated at the outset the transmission is composed of a drive module, which comprises the drive wheel, and of a transmission module, which comprises the transmission wheel, wherein the drive module and the transmission module are connected to one another by a joining connection.
  • a modular design of the transmission is proposed in which the drive module and the transmission module form functional modules which are joined together to produce the operative engagement of drive wheel and transmission wheel.
  • the separately present modules are configured such that they can be joined to one another and, for this purpose, comprise for example joining elements which correspond to one another, for example joining surfaces.
  • the modules are then connected to one another.
  • the modules are first of all positioned relative to one another such that the drive wheel of the drive module comes into operative engagement with the transmission wheel of the transmission module.
  • An optimized orientation and alignment occurs during this positioning such that the transmission members, namely drive wheel and transmission wheel, are brought into engagement with one another while compensating for manufacturing-related dimensional tolerances.
  • this positioning of the transmission members can occur individually for each individual transmission, it is possible to take account of and compensate for even the slightest deviations of dimension and/or orientation of the transmission members and their bearings. If the optimal alignment has occurred, the drive module and transmission module are fixed to one another in a positionally accurate manner by the joining connection.
  • a particular advantage of a transmission produced according to the invention from modular assemblies is that even the slightest dimensional deviations, which can lead to undesired noise formation and increased wear particularly upon operative engagement of transmission wheels, can be effectively compensated for during the manufacture of the transmission when producing the joining connection. As a result, an improved running smoothness and a reduced degree of wear can be achieved.
  • a further advantage is that the tolerance requirements placed on the individual transmission members—drive wheel, transmission wheel and their bearings—can be lower.
  • a transmission built according to the invention from joined modular assemblies has better operating properties than conventional, integrated transmissions and requires a lower manufacturing and assembly outlay.
  • the drive module comprises a drive part housing in which the drive wheel is mounted
  • the transmission module comprises a transmission part housing in which the transmission wheel is mounted
  • the drive part housing is connected to the transmission part housing via the joining connection.
  • Appropriate cutouts or openings which correspond to one another in the part housings allow the drive wheel and transmission wheel to be brought into operative engagement with one another, for example through the mutual engagement of toothings.
  • the drive and transmission axes defined by the bearings prefferably be oriented individually relative to one another for each individual transmission by relative positioning of the drive part housing and transmission part housing and to arrange them at an optimal axis distance such that the operative engagement of drive wheel and transmission wheel is optimized.
  • the drive wheel and transmission wheel After joining the part housings, the drive wheel and transmission wheel are fixed in a positionally fixed manner such that the optimized operative engagement of the transmission members is ensured over the operating life of the transmission.
  • the part housings having the bearings and transmission members arranged therein can be manufactured and provided as modular assemblies which at least partially form the drive module and the transmission module.
  • a drive part housing can comprise a drive wheel, for example in the form of a worm, and a drive wheel bearing
  • a transmission part housing can comprise a transmission wheel, for example in the form of a worm wheel, and a transmission wheel bearing.
  • the drive part housing comprises, in the region of the drive wheel
  • the transmission part housing comprises, in the region of the transmission wheel, an open engagement region, wherein the drive wheel and the transmission wheel are in operative engagement with one another through the engagement region.
  • the drive part housing has an engagement region open toward the transmission part housing, and vice versa, that is to say that, in the joined-together state, there is an open passage between the part housings in the engagement region.
  • the drive wheel designed as a worm projects from the drive part housing in the engagement region and plunges through the engagement region into the transmission part housing, where it meshes with the toothing of the transmission wheel designed as a worm wheel.
  • the drive module and the transmission module have corresponding joining elements.
  • the drive module and the transmission module are connected to one another and mutually fixed at the joining elements.
  • the joining elements can comprise, for example, form-fitting elements which allow an unambiguous orientation of the modules in one or more spatial directions.
  • the joining elements offer degrees of freedom with respect to the relative positioning, for example by means of guide surfaces and/or edges which allow guidance or support in at least one spatial direction while, for example, a relative movement or displacement of the drive module and transmission module is possible in at least one other spatial direction, in order for example to adjust the axis distance between the drive wheel and transmission wheel.
  • the joining elements can be designed for specific types of joining connections in terms of arrangement, shaping, material, surface structure and the like.
  • welding preparations with material arrangements for the optimized production of a welding connection can be provided, or structured surfaces for the production of integrally bonded connections by means of adhesive bonding or brazing can be provided, or receptacles for connecting elements such as screws, rivets or the like can be provided.
  • the joining elements are preferably arranged on the drive part housing and/or the transmission part housing and allow the positioning and joining together of the drive module and transmission module.
  • the joining connection can comprise a form-fitting and/or force-fitting and/or integrally bonded connection.
  • a nonreleasable connection can occur, for example in an integrally bonded manner by welding, ultrasonic welding or adhesive bonding, or else in a form-fitting manner by riveting, seaming, flanging, clinching or caulking. Additionally or alternatively, a releasable connection can occur, for example by means of screwing.
  • the transmission part housing comprises at least one preferably cylindrical tubular portion which is coaxial to the transmission axis and which is encompassed by the drive part housing at least over a circumferential subregion.
  • the transmission wheel is mounted coaxially in the tubular portion and, depending on the embodiment of the adjustment drive, is connected to the threaded spindle or the spindle nut in a rotationally fixed manner, wherein the transmission axis coincides with the threaded spindle axis.
  • the tubular portion preferably comprises, in the region of the transmission wheel, an engagement region which is designed as an engagement opening which in each case extends over a portion in the circumferential and axial direction.
  • the drive part housing is adapted to the tubular portion such that the latter is at least partially received over a circumferential portion of its outer circumference.
  • the tubular portion can be cylindrical in form
  • the drive part housing can comprise a hollow cylindrical connecting portion which corresponds in diameter, with the result that a kind of channel-shaped connecting portion, which is maximally semicircular in circumferential cross section, is formed in which the tubular portion can be received in a form-fitting manner.
  • the drive part housing seated on the tubular portion is fixed by producing the joining connection between the part housings.
  • the drive wheel is coupled coaxially to the motor shaft of an actuating motor, and the transmission wheel is connected to a threaded spindle or a spindle nut.
  • the drive wheel can be arranged, for example, on the motor shaft, or on a driveshaft coupled to the motor shaft.
  • the motor shaft or the driveshaft can be mounted, on the motor side, in the motor or in at least one bearing in the drive part housing and, at its end remote from the motor, in a bearing in the drive part housing, with the result that a defined orientation occurs in the drive module.
  • the actuating motor can be connected to the drive module in a positionally fixed manner, preferably by the actuating motor being attached to the drive part housing, for example by means of a flanged connection.
  • the drive axis and the transmission axis are substantially perpendicular to one another and have a distance from one another which is predetermined by the axis distance between the drive wheel and transmission wheel in operative engagement.
  • Substantially perpendicular is to be understood as meaning a deviation of up to ⁇ 10° from an ideal perpendicular arrangement. In the case of toothed wheels, this is the sum of the pitch circle radii.
  • the axis distance is determined from the pitch circle radius of the worm wheel and the reference circle radius of the worm.
  • the drive axis is defined by a bearing arranged in the drive module
  • the transmission axis is defined by a bearing arranged in the transmission module
  • the above-stated embodiment can be realized by the drive wheel being designed as a worm and the transmission wheel being designed as a worm wheel.
  • the worm is preferably mounted as a constituent part of the drive module in a drive part housing.
  • the mounting can be effected in at least one shaft bearing arranged in the drive part housing, and/or in a motor bearing of the actuating motor which is connected to the drive part housing.
  • the worm wheel is mounted in the transmission part housing.
  • the drive part housing and transmission part housing have corresponding engagement openings through which the worm can be brought into meshing operative engagement with the worm wheel.
  • the invention comprises a drive unit for an adjustment drive, having a transmission in which there is mounted a drive wheel which can be driven to rotate about a drive axis and which is in operative engagement with a transmission wheel which is mounted in the transmission so as to be rotatable about a transmission axis.
  • the transmission is composed of a drive module, which comprises the drive wheel, and of a transmission module, which comprises the transmission wheel, wherein the drive module and the transmission module are connected to one another by a joining connection.
  • the underlying object is achieved by using such a drive unit in an adjustment drive.
  • the drive unit can comprise the features described above for the adjustment unit according to the invention.
  • the invention further relates to a motor-adjustable steering column for a motor vehicle, having a carrying unit which can be attached to a vehicle body and by which there is held an actuating unit in which a steering spindle is mounted so as to be rotatable about a longitudinal axis, and having an adjustment drive which is connected to the carrying unit and to the actuating unit and by which the actuating unit can be adjusted relative to the carrying unit, wherein the adjustment drive comprises a threaded spindle which engages in a spindle nut, and wherein the adjustment drive comprises a drive unit having a transmission in which there is mounted a drive wheel which can be driven to rotate about a drive axis and which is in operative engagement with a transmission wheel which is mounted in the transmission so as to be rotatable about a transmission axis and is connected to the threaded spindle or the spindle nut.
  • the transmission is composed of a drive module, which comprises the drive wheel, and of a transmission module
  • the adjustment drive can be configured as described above in developments of the invention.
  • An adjustment drive according to the invention for a motor-adjustable steering column for a motor vehicle can be produced in a method according to the invention comprising the following steps:
  • a drive module can at first be manufactured separately, wherein the drive wheel, for example a worm, is positioned in a defined manner, for example by means of one or more bearings of the drive shaft, here the worm shaft.
  • the mounting can occur in the drive part housing, preferably, as seen from the actuating motor, on the shaft end remote from the motor, and, on the end close to the motor, likewise in a bearing in the drive part housing, or in a motor bearing of the actuating motor which is fixed to the drive part housing.
  • the transmission wheel is mounted in the transmission part housing so as to be rotatable about the transmission axis which coincides with the threaded spindle axis.
  • the drive part housing and the transmission part housing are positioned relative to one another in such a way that the drive wheel and the transmission wheel come into operative engagement with one another, wherein, in the stated example, the worm meshes with the worm wheel.
  • the axis distance between drive axis and transmission axis is set to optimal transmission backlash, wherein manufacturing and dimensional tolerances of the drive wheel and transmission wheel and of the bearings can be compensated for.
  • the distance can be optimized for example in that the backlash between the tooth flanks is monitored during the relative positioning of the drive part housing and transmission part housing, and/or the force on the toothed engagement is measured in the direction of the axis distance.
  • the drive module and transmission module are fixed to one another by producing the joining connection between the drive part housing and transmission part housing.
  • the drive wheel and transmission wheel are fixed at an optimal axis distance and correspondingly in optimal operative engagement.
  • a low-noise and low-wear running of the transmission over its service life is thereby ensured without additional devices for compensating for dimensional tolerances being required.
  • the joining connection can be achieved, for example, by a welding, for example as an ultrasonic welding connection, of corresponding joining elements on the drive part housing and transmission part housing.
  • a welding for example as an ultrasonic welding connection
  • the production of a form-fitting, nonreleasable connection can also be achieved by material deformation, for example by stamping, caulking, pressing, seaming or the like.
  • releasable or nonreleasable fastening elements for example screws or rivets, can be used between the drive part housing and transmission part housing.
  • the method according to the invention makes it possible to produce an adjustment drive having the above-described features and a drive unit for such an adjustment drive and a steering column comprising at least one such adjustment drive.
  • FIG. 1 shows, from obliquely top right, a steering column 1 according to the invention in a schematic perspective view of the rear end with respect to the direction of travel of a vehicle (not shown), where a steering wheel (not shown here) is held in the operating region.
  • FIG. 2 shows the steering column 1 in a view from the opposite side, that is to say as seen from top right.
  • the steering column 1 comprises a carrying unit 2 which is designed as a bracket which comprises fastening means 21 in the form of fastening holes for attachment to a vehicle body (not shown).
  • the carrying unit 2 holds an actuating unit 3 which is received in a casing unit 4 —also referred to as a guide box or box-section swinging fork.
  • the actuating unit 3 comprises a casing tube 31 in which a steering spindle 32 is mounted so as to be rotatable about a longitudinal axis L, said steering spindle extending axially in the longitudinal direction, that is to say in the direction of the longitudinal axis L.
  • a fastening portion 33 to which a steering wheel (not shown) can be attached is formed on the steering spindle 32 .
  • the steering spindle 32 is connected to a fork of a universal joint 35 in a torque-transmitting manner.
  • the actuating unit 3 is received in the casing unit 4 so as to be telescopically displaceable in the direction of the longitudinal axis L so that the steering wheel connected to the steering spindle 32 can be positioned forward and backward in the longitudinal direction relative to the carrying unit 2 , as indicated by the double arrow parallel to the longitudinal axis L.
  • the casing unit 4 is mounted in its front end region in a pivot bearing 22 on the carrying unit 2 so as to be pivotable about a horizontal pivot axis S situated transversely to the longitudinal axis L.
  • the casing unit 4 is connected to the carrying unit 2 via a rotatable actuating lever 41 .
  • the casing unit 4 can be pivoted relative to the carrying unit 2 about the pivot axis S which lies horizontally in the installed state, whereby it is possible to carry out an adjustment of a steering wheel attached to the fastening portion 33 in the vertical direction H, which is indicated by the double arrow.
  • a first adjustment drive 5 for longitudinally adjusting the actuating unit 3 relative to the casing unit 4 in the direction of the longitudinal axis L comprises a spindle drive having a spindle nut 51 with an internal thread 74 in which a threaded spindle 52 extending along a threaded spindle axis G engages, that is to say is screwed by its external thread into the corresponding internal thread 74 of the spindle nut 51 .
  • the threaded spindle axis G of the threaded spindle 52 extends substantially parallel to the longitudinal axis L.
  • the spindle nut 51 is mounted in a transmission housing 81 so as to be rotatable about the threaded spindle axis G in a transmission 8 , which transmission housing is fixedly connected to the casing unit 4 .
  • the spindle nut 51 is supported axially on the casing unit 4 via the transmission housing 81 , as will be explained in more detail below.
  • the threaded spindle 52 is connected by way of a fastening element 54 formed on its rear end to the actuating unit 3 via a transmission element 34 , specifically fixedly in the direction of the threaded spindle axis G or the longitudinal axis L and fixedly with respect to rotation about the threaded spindle axis G.
  • a so-called plunging spindle drive is realized by the rotationally drivable spindle nut 51 and the threaded spindle 52 which is fixed with respect to rotation.
  • the transmission element 34 extends from the actuating unit 3 through a slot-shaped through-opening 42 in the casing unit 4 . To adjust the steering column 1 in the longitudinal direction, the transmission element 34 can be moved along freely in the longitudinal direction in the through-opening 42 .
  • the adjustment drive 5 comprises an electric actuating motor 55 by which the spindle nut 51 can be driven to rotate with respect to the threaded spindle axis G relative to the fixed threaded spindle 52 . It is thus possible—depending on the direction of rotation of the actuating motor 55 —for the threaded spindle 52 to be displaced in the direction of the axis G translationally relative to the spindle nut 51 , with the result that correspondingly the actuating device 3 connected to the threaded spindle 52 is adjusted relative to the casing unit 4 connected to the spindle nut 51 in the direction of the longitudinal axis L.
  • the drive of the spindle nut 51 will be explained in more detail below.
  • FIG. 2 which shows a perspective view of the steering column 1 from the side situated to the rear in FIG. 1 , it can be seen how a second adjustment drive 6 for adjustment in the vertical direction H is attached to the steering column 1 .
  • This adjustment drive 6 comprises a spindle nut 61 in whose internal thread 74 a threaded spindle 62 engages along a threaded spindle axis G.
  • the adjustment drive comprises a transmission 9 in which the threaded spindle 62 is mounted so as to be rotatable in a transmission housing 91 , which is fastened to the casing unit 4 , about the threaded spindle axis G, which is referred to with the same meaning as a transmission axis G, and is axially supported, in the direction of the threaded spindle axis G, on the casing unit 4 .
  • the threaded spindle 62 can be selectively driven to rotate about the threaded spindle axis G in both directions of rotation by an electric actuating motor 65 .
  • the spindle nut 61 is attached fixedly with respect to a rotation about the threaded spindle axis G on one end of the two-arm actuating lever 41 , which is mounted on the carrying unit 22 so as to be rotatable about a pivot bearing 23 , and its other arm is connected by the other end to the casing unit 4 .
  • a so-called rotational spindle drive is realized by the rotationally drivable threaded spindle 62 and the spindle nut 61 which is fixed with respect to rotation.
  • the invention relates to the design of a transmission housing 8 or 9 , the latter being substantially only distinguished in that, in the transmission housing 9 , it is the threaded spindle 52 which is mounted so as to be rotatable about the respective threaded spindle axis G and is mounted fixedly in the axial direction, and, in the transmission housing 8 , it is the spindle nut 61 .
  • FIGS. 1-10 In the following, FIGS.
  • FIG. 3 shows the drive unit released from the adjustment drive 6 in the assembled state.
  • FIG. 4 the key functional parts are shown apart from one another in an exploded illustration. The arrangement of the individual parts explained in more detail below can be gathered from the sectional illustrations in FIGS. 5 , 6 and 7 .
  • the transmission housing 91 of the transmission 9 is assembled according to the invention from a drive module 92 and a transmission module 91 .
  • the drive module 92 comprises a drive part housing 921 in which there is rotatably mounted a drive wheel which is designed as a worm 922 and which is fastened to a driveshaft 923 which extends in the direction of a drive axis A.
  • the worm 922 is preferably fastened to the driveshaft 923 by means of a transverse interference fit. This offers the advantage that there is no need for high pressing-on forces as in the case of a longitudinal interference fit.
  • the worm 922 is preferably inductively heated before the joining operation and then pushed onto the driveshaft 923 with little application of force, with the result that the worm 922 is shrunk on the driveshaft 923 after cooling.
  • the driveshaft 923 can be rotationally driven by the actuating motor 65 , with the motor shaft thereof being able to form the driveshaft 923 or being coupled thereto at least in a torque-transmitting manner.
  • the actuating motor 65 is flanged onto the drive part housing 921 and connected thereto, wherein the driveshaft 923 is rotatably mounted, at its end remote from the motor, in a bearing 924 in the drive part housing 921 , and, in its region close to the motor, in a motor bearing 925 which, together with the actuating motor 65 , is likewise fixed in the drive part housing 921 .
  • the transmission module 91 comprises a tubular transmission part housing 911 which is formed in a hollow cylindrical manner coaxially to the transmission axis G and in which a transmission wheel designed as a worm wheel 912 is mounted so as to be rotatable about the transmission axis G.
  • the worm wheel 912 is connected to the threaded spindle 62 in a rotationally fixed manner.
  • the transmission part housing 911 comprises an engagement opening 913 in the region of the worm wheel 912 .
  • the drive part housing 921 comprises fastening portions 926 which are arranged on an at least partially hollow cylindrical receiving region 927 and are situated opposite to one another with respect to the transmission axis G.
  • the receiving region 927 has approximately the shape of a channel which extends in the direction of the transmission axis G and which has a semicircular open cross section which is configured for the form-fitting reception of the outwardly cylindrical transmission part housing 911 .
  • a drive module 92 is made available by virtue of the fact that the worm 922 is inserted into the drive part housing 921 , said worm being mounted so as to be rotatable about the drive axis A by way of the driveshaft 923 in the bearing 924 in the drive part housing 921 .
  • the driveshaft 923 is coupled to the motor shaft of the actuating motor 65 , which is likewise connected to the drive module 92 .
  • a transmission module 91 wherein the worm wheel 912 connected to the threaded spindle 62 is mounted in the transmission part housing 911 so as to be rotatable about the transmission axis G, which is identical to the threaded spindle axis G.
  • the drive module 92 and the transmission module 91 are positioned relative to one another in such a way that the transmission part housing 911 is received between the fastening portions 926 of the drive part housing 921 .
  • the transmission part housing 911 is now positioned transversely to the transmission axis G relative to the drive part housing 921 until the engagement distance E, also referred to as axis distance E, between the drive axis A and the transmission axis G is set, wherein the worm 922 plunges (protrudes) through the engagement opening 913 and engages in the worm wheel 912 , and the optimal engagement position of the worm 922 and worm wheel 912 is produced.
  • the drive module 92 is fixed to the transmission module 91 by producing a joining connection between the drive part housing 921 and the transmission part housing 911 .
  • joining connections 93 take the form of caulking connections.
  • a pin-shaped tool 11 is used to plastically form in each case an embossment 931 from outside into the fastening portion 926 by means of a linear movement indicated by the double arrow.
  • the embossment 931 projects inwardly in a form-fitting manner and engages in a form-fitting manner in a corresponding cutout 932 in the outer side of the transmission part housing 911 .
  • this transmission part housing 911 is for its part received in a form-fitting manner between the fastening portions 926 in a form-fitting manner in the concave receiving region 927 of the drive part housing 921 , it is permanently fixed in a form-fitting manner by the introduction of the embossments 931 .
  • the set axis distance E is likewise fixed.
  • the drive part housing 921 is preferably created from a metallic material.
  • FIG. 9 is a side view showing the arrangement of an embossment 931 in a fastening portion 926 of the drive part housing 921 .
  • An alternative arrangement of a plurality of embossments 931 is shown in FIG. 10 .
  • This has the further advantage that, where appropriate, a tilting of the transmission axis G relative to the drive module 92 that is introduced for tolerance compensation can be set and fixed.
  • FIG. 6 A further possibility of joining connections 93 is shown in FIG. 6 .
  • the drive part housing 921 is connected to the transmission part housing 911 by means of screws 933 which are guided through the fastening portions 926 .
  • the screws 933 make it possible to form a releasable connection which, for example, allows readjustment of the axis distance E.
  • the joining connections 93 can be realized by welding seams 934 which can also be configured as spot welds.
  • This integrally bonded nonreleasable connection can be efficiently produced and is precise and reliable.
  • An integrally bonded connection can be produced in a particularly efficient manner by means of a laser welding process.
  • joining connections 93 take the form of ultrasonic welding connections.
  • a sonotrode 111 is used to form in each case a formation 935 from outside into the fastening portion 926 by local thermal melting of the drive part housing 921 created from plastic. After solidification of the locally melted plastic, there is a form-fitting connection between the transmission part housing 911 and the drive part housing 921 .
  • the formation 935 projects inwardly in a form-fitting manner and engages in a form-fitting manner in a corresponding cutout 932 in the outer side of the transmission part housing 911 .
  • this transmission part housing 911 is for its part received in a form-fitting manner between the fastening portions 926 in a form-fitting manner in the concave receiving region 927 of the drive part housing 921 , it is permanently fixed in a form-fitting manner by the introduction of the formations 935 .
  • the set axis distance E is likewise fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Controls (AREA)
  • Gear Transmission (AREA)
  • Power Steering Mechanism (AREA)
US16/605,244 2017-04-19 2018-04-16 Adjustment drive for a steering column, drive unit for an adjustment drive, motor-adjustable steering column for a motor vehicle, and method for producing an adjustment drive for a steering column Active 2039-01-02 US11697446B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017206551.6A DE102017206551A1 (de) 2017-04-19 2017-04-19 Verstellantrieb für eine Lenksäule, Antriebseinheit für einen Verstellantrieb, motorisch verstellbare Lenksäule für ein Kraftfahrzeug und Verfahren zur Herstellung eines Verstellantriebs für eine Lenksäule
DE102017206551.6 2017-04-19
PCT/EP2018/059684 WO2018192880A1 (fr) 2017-04-19 2018-04-16 Entraînement de réglage pour une colonne de direction, unité d'entraînement pour un entraînement de réglage, colonne de direction à réglage motorisé pour un véhicule automobile et procédé de fabrication d'un entraînement de réglage pour une colonne de direction

Publications (2)

Publication Number Publication Date
US20210139067A1 US20210139067A1 (en) 2021-05-13
US11697446B2 true US11697446B2 (en) 2023-07-11

Family

ID=59010788

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/605,244 Active 2039-01-02 US11697446B2 (en) 2017-04-19 2018-04-16 Adjustment drive for a steering column, drive unit for an adjustment drive, motor-adjustable steering column for a motor vehicle, and method for producing an adjustment drive for a steering column

Country Status (5)

Country Link
US (1) US11697446B2 (fr)
EP (1) EP3612432B1 (fr)
CN (1) CN110573404A (fr)
DE (1) DE102017206551A1 (fr)
WO (1) WO2018192880A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017218894A1 (de) 2017-10-23 2019-04-25 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
DE102018202157A1 (de) * 2018-02-13 2019-08-14 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
DE102018202795A1 (de) * 2018-02-23 2019-08-29 Thyssenkrupp Ag Lenksäule für ein Kraftfahrzeug
DE102018204190A1 (de) * 2018-03-20 2019-09-26 Robert Bosch Gmbh Getriebegehäuse für einen Spindelantrieb, Spindelantrieb und Komfortantrieb mit einem Spindelantrieb
DE102018124143A1 (de) * 2018-09-28 2020-04-02 Thyssenkrupp Ag Lagervorrichtung, Verstellvorrichtung, verstellbare Lenksäule, Verfahren zum Herstellen einer Verstellvorrichtung
DE102019201611A1 (de) 2019-02-07 2020-08-13 Thyssenkrupp Ag Verstellantrieb für eine Lenksäule, Antriebseinheit für einen Verstellantrieb, motorisch verstellbare Lenksäule für ein Kraftfahrzeug und Verfahren zur Herstellung eines Verstellantriebs für eine Lenksäule
CN113983147B (zh) * 2021-11-03 2024-02-20 连城凯克斯科技有限公司 一种自适应减速机轴和螺母不同心的调节装置
DE102021131348A1 (de) 2021-11-30 2023-06-01 Schaeffler Technologies AG & Co. KG Verstellantrieb für eine verstellbare Lenksäuleneinheit
DE102021131350A1 (de) 2021-11-30 2023-06-01 Schaeffler Technologies AG & Co. KG Verstellantrieb für eine verstellbare Lenksäuleneinheit

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3820415A (en) * 1973-03-01 1974-06-28 Trw Inc Rack and pinion assembly
US4802374A (en) * 1985-04-18 1989-02-07 Equipments Automobiles Marchal Device for controlling the displacement of an element, in particular of a seat or parts of a seat of a motor vehicle, in relation to a base
US20050252332A1 (en) * 2004-05-14 2005-11-17 Trw Automotive Safety Systems Gmbh Steering wheel for a motor vehicle
EP1977866A1 (fr) 2005-12-28 2008-10-08 Harmonic Drive Systems Inc. Unite d'enture digitiforme a engrenage a vis sans fin hermetique
DE202008014088U1 (de) 2008-10-13 2010-03-04 Neff, Karl Linearantrieb
US20110126653A1 (en) * 2008-08-12 2011-06-02 Kroener Gregor Adjusting gearing for an adjusting device of a motor vehicle
US20130126259A1 (en) 2011-11-21 2013-05-23 Hyundai Motor Company Steering apparatus of vehicle and system of controlling the same
CN204095869U (zh) 2014-08-29 2015-01-14 浙江吉利控股集团有限公司 一种汽车转向管柱壳体总成
CN204432743U (zh) 2014-12-26 2015-07-01 中国第一汽车股份有限公司 一种乘用车的转向管柱总成
DE102014104362A1 (de) 2014-03-28 2015-10-01 Thyssenkrupp Presta Ag Lenksäule für ein Kraftfahrzeug
US20160053514A1 (en) * 2014-08-22 2016-02-25 Apex Industrial Technologies Llc Front-mounted door assembly for storage and dispensing units
CN106536327A (zh) 2014-07-22 2017-03-22 蒂森克虏伯普利斯坦股份公司 机电动力转向系统
US20170120944A1 (en) * 2015-10-30 2017-05-04 Aisin Seiki Kabushiki Kaisha Steering device of vehicle
US20170363189A1 (en) * 2016-06-17 2017-12-21 Robert Bosch Llc Actuator For Providing Relative Motion Between Two Points

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3820415A (en) * 1973-03-01 1974-06-28 Trw Inc Rack and pinion assembly
US4802374A (en) * 1985-04-18 1989-02-07 Equipments Automobiles Marchal Device for controlling the displacement of an element, in particular of a seat or parts of a seat of a motor vehicle, in relation to a base
US20050252332A1 (en) * 2004-05-14 2005-11-17 Trw Automotive Safety Systems Gmbh Steering wheel for a motor vehicle
EP1977866A1 (fr) 2005-12-28 2008-10-08 Harmonic Drive Systems Inc. Unite d'enture digitiforme a engrenage a vis sans fin hermetique
US20110126653A1 (en) * 2008-08-12 2011-06-02 Kroener Gregor Adjusting gearing for an adjusting device of a motor vehicle
DE202008014088U1 (de) 2008-10-13 2010-03-04 Neff, Karl Linearantrieb
US20130126259A1 (en) 2011-11-21 2013-05-23 Hyundai Motor Company Steering apparatus of vehicle and system of controlling the same
CN103129602A (zh) 2011-11-21 2013-06-05 现代自动车株式会社 车辆的转向装置及其控制系统
DE102014104362A1 (de) 2014-03-28 2015-10-01 Thyssenkrupp Presta Ag Lenksäule für ein Kraftfahrzeug
CN106536327A (zh) 2014-07-22 2017-03-22 蒂森克虏伯普利斯坦股份公司 机电动力转向系统
US20170217476A1 (en) 2014-07-22 2017-08-03 Thyssenkrupp Presta Ag Electromechanical power steering system
US20160053514A1 (en) * 2014-08-22 2016-02-25 Apex Industrial Technologies Llc Front-mounted door assembly for storage and dispensing units
CN204095869U (zh) 2014-08-29 2015-01-14 浙江吉利控股集团有限公司 一种汽车转向管柱壳体总成
CN204432743U (zh) 2014-12-26 2015-07-01 中国第一汽车股份有限公司 一种乘用车的转向管柱总成
US20170120944A1 (en) * 2015-10-30 2017-05-04 Aisin Seiki Kabushiki Kaisha Steering device of vehicle
US20170363189A1 (en) * 2016-06-17 2017-12-21 Robert Bosch Llc Actuator For Providing Relative Motion Between Two Points

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
English Translation of International Search Report issued in PCT/EP2018/059684, dated Jul. 4, 2018.

Also Published As

Publication number Publication date
CN110573404A (zh) 2019-12-13
WO2018192880A1 (fr) 2018-10-25
EP3612432A1 (fr) 2020-02-26
DE102017206551A1 (de) 2017-06-29
EP3612432B1 (fr) 2022-11-09
DE102017206551A8 (de) 2017-07-20
US20210139067A1 (en) 2021-05-13

Similar Documents

Publication Publication Date Title
US11697446B2 (en) Adjustment drive for a steering column, drive unit for an adjustment drive, motor-adjustable steering column for a motor vehicle, and method for producing an adjustment drive for a steering column
US11192575B2 (en) Steering column for a motor vehicle
US6705176B2 (en) Electric power steering apparatus
US9126624B2 (en) Electric steering wheel position adjustment apparatus
US9199662B2 (en) Rack and pinion steering gear unit
WO2012157703A1 (fr) Appareil de direction pour véhicule automobile
JP5645946B2 (ja) 車両座席用の傾き調整装置
US20070295552A1 (en) Electric power steering apparatus
US8262491B2 (en) Driveshaft assembly and method for assembling driveshaft assembly
CN103889817A (zh) 用于可转动地支承转向轴的转向轴支承单元
US20060207380A1 (en) Steering apparatus
US20220081020A1 (en) Adjustment drive for a steering column, drive unit for an adjustment drive, motor-adjustable steering column for a motor vehicle, and method for producing an adjustment drive for a steering column
KR101600191B1 (ko) 차량용 시트 레일
CN112292305B (zh) 用于附接到导螺杆的耦接元件、具有耦接元件的导螺杆、具有导螺杆的杆驱动器和用于机动车辆的具有杆驱动器的转向柱
KR100885096B1 (ko) 자동차 시트 높낮이 조절 장치
CN111511630A (zh) 用于机动车的转向传动机构
US20140284982A1 (en) Fitting For A Vehicle Seat and Vehicle Seat
US11408455B2 (en) Systems and methods for friction bit joining
US20240286532A1 (en) Height adjustment system for a seat and method for assembling a height adjustment system for a seat
US20240286665A1 (en) Steering device
KR20120094101A (ko) 차량 좌석, 특히 자동차 좌석
JP4487624B2 (ja) 電動式ステアリングコラム装置
CN113993766A (zh) 用于附接到丝杠上的耦合元件、带有耦合元件的丝杠、带有丝杠的转轴驱动器和带有转轴驱动器的机动车辆转向柱
CN116252686A (zh) 驱动单元以及用于运行这种驱动单元的方法
JP2002263872A (ja) 燒結部材の接合方法、その接合構造、ならびに、リングギヤと板ばねの接合方法、およびギヤ機構

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: THYSSENKRUPP AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHACHT, ARNE;HUBER, SEBASTIAN;SPECHT, JEAN-PIERRE;SIGNING DATES FROM 20191022 TO 20191023;REEL/FRAME:050824/0809

Owner name: THYSSENKRUPP PRESTA AG, LIECHTENSTEIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHACHT, ARNE;HUBER, SEBASTIAN;SPECHT, JEAN-PIERRE;SIGNING DATES FROM 20191022 TO 20191023;REEL/FRAME:050824/0809

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STCF Information on status: patent grant

Free format text: PATENTED CASE